Intermatic EI40AC Installations
158SS11362
www.intermatic.com
Other Installations
MULTISWITCH APPLICATIONS USING THE ELECTRONIC TIMER ARE WIRED DIFFERENTLY THAN WHEN USING CONVENTIONAL TOGGLE
SWITCHES. READ THE FOLLOWING INSTRUCTIONS CAREFULLY. Multiple EI40 timers may be mounted in adjacent junction box slots. No
derating is required for multiple timers. Note: THE REMOTE SWITCH(ES) MAY NOT FUNCTION RELIABLY WHEN THE ACCUMULATED WIRE
LENGTH TO THE REMOTE SWITCH(ES) EXCEEDS 200 FEET OR IF THE WIRING TO THE REMOTE SWITCH(ES) IS BURIED UNDERGROUND.
Consult factory for details. Note: Used remote switches from a previous conventional installation may not function reliably with an electronic
timer. Try a brand new remote switch if function is intermittent.
EI40C/EI40AC
Electronic Automatic Shut-Off Timer
LINE
RED
LOAD
NEUTRAL
BLUE
TIMER
BLACK
SINGLE POLE SWITCH
Wiring diagram, 2 switch installation (3-way)
using a single pole remote switch
Wiring diagram, 2 switch installation (3-way)
LINE
BLUE
RED
3-WAY SWITCH
LOAD
NEUTRAL
JUMPER
TIMER
BLACK
Wiring diagram, 3 switch installation
For 3 or more switch operation, AN ADDITIONAL WIRE MUST BE ADDED between
the load and the timer. The jumper wire is not required for these applications.
For existing 3 switch installations replace one of the existing 3-way switches with the
timer and replace the existing 4-way switch with a 3-way switch as shown above.
LINE
RED
LOAD
ADDITIONAL WIRE
NEUTRAL
BLUE
TIMER
BLACK
TWO 3-WAY SWITCHES
LINE
RED
LOAD
NEUTRAL
BLUE
TIMER
BLACK
TWO 3-WAY SWITCHES
4-WAY
SWITCH(ES)
4 or more switch installation
For 4 or more switch installations use the preceding 3 switch installation
diagram and wire 4-way switches between the two 3-way switches.
Installations including a dimmer
• The load size and type must not exceed the rating of the dimmer.
(Typically 600 watts, 12O VAC, 60 Hz. incandescent lamps only.)
• If the dimmer is placed in it‘s ‘OFF‘ position, the timer cannot operate the lights.
• If the dimmer is set too low, the lights may not turn back on under timer control. If
necessary, use a premium quality dimmer that can be turned on at very low settings.
LINE
RED
LOAD
NEUTRAL
BLUE
TIMER
DIMMER
BLACK
(Capped, Not Connected)
Multi-switch installation using a dimmer
A 3-way dimmer should not be used. If a multi-switch installation is required,
use the following diagram.
LINE
RED
REMOTE SWITCH
LOAD
NEUTRAL
BLUE
TIMER
DIMMER
BLACK
Special applications
Because of it’s unique “hard contact” switch feature, your EI40 timer
may be used for applications not previously possible for electronic wall
timers, such as with dimmers, without utility power, circuits other than
120 volts, controlling relays or contactors, or to control DC voltage (for
example in recreational vehicles). See instructions above for dimmer
applications. For DC and high voltage applications please note the
reduced load ratings on product label. Consult factory for application
details.
Warranty
If within 1 year from date of purchase, this product fails due to a defect
in materials or workmanship, Intermatic Incorporated will repair or
replace it free of charge. This warranty does not apply to: (a) damage
caused by accident, abuse, mishandling, dropping; (b) units which have
been subject to unauthorized repair, opened, taken apart; (c) units not
used in accordance with directions; (d) damages exceeding the cost of
the product. Some states do not allow a limitation of damages, so the
foregoing limitation may not apply to you. This warranty gives you
specific legal rights, and you may have other rights which vary from
state to state.
This warranty service is available by either: (a) returning the product to
the dealer from whom the product was purchased or (b) mailing
postage prepaid to the authorized service station listed below. Be sure
to wrap the product securely when mailing to avoid shipping damage.
This warranty is made by Intermatic Incorporated, Spring Grove, Illinois
60081-9698.
Authorized Service Station
INTERMATIC INCORPORATED
After Sales Service
7777 Winn Road
SPRING GROVE, ILLINOIS 60081-9698
For new construction or to replace a dimmer switch a lighted switch or a 3-way switch without
screw terminals, a single pole switch can be used at the remote location as shown.